science
Grade-9
Easy
Question
Which of the following is correct to find the number of neutrons?
- n= A-Z
- n + z=A
- Z= A-n
- All the above
Hint:
The number of neutrons in an atom can be calculated by subtracting the atomic number from the atomic mass. Both of these numbers can be found on the periodic table.
The correct answer is: All the above
Number of Protons = Atomic Number
Number of Neutrons = Atomic Mass- Atomic Number
Number of Electrons = Atomic Number
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